Error Message

# rpm -qa VRTSvxvm
VRTSvxvm-8.0.0.2600-RHEL8.x86_64
 

Prior to excluding any DMPNODE

# cat /etc/vx/vxvm.exclude
exclude_all 0
paths
#
controllers
#
product
#

In this instance, Veritas DMPNODE emc0_0433 is not excluded from "vxdisk list" when running the command:
 

# vxdmpadm exclude dmpnodename=emc0_0433


The /etc/vx/vxvm.exclude file is not populated with the required hardware path information to persistently exclude the specified DMPNODE name.

Incorrect format:
 

# cat /etc/vx/vxvm.exclude
exclude_all 0
paths
sdv /dev/sdv emc0_0433
sdau /dev/sdau emc0_0433
sdbs /dev/sdbs emc0_0433
sdcr /dev/sdcr emc0_0433
#
controllers
#
product
#
 

The VRTSvxvm 8.0.0.2600 public patch is missing key changes to the respective /etc/vx/vxpath_links and /lib/udev/vxpath_links scripts.

Fix missing with VRTSvxvm 8.0.0.2600 rpm:

# wc -l /lib/udev/vxpath_links
378 /lib/udev/vxpath_links

# wc -l /etc/vx/vxpath_links
378 /etc/vx/vxpath_links
 

Fix included with VRTSvxvm 8.0.0.2602 rpm:

# wc -l /lib/udev/vxpath_links
399 /lib/udev/vxpath_links

# wc -l /etc/vx/vxpath_links
399 /etc/vx/vxpath_links

Customers must install VRTSvxvm Public hotfix 8.0.0.2602

Download Link:

https://downloads.infoscale.com/infoscale/REL150377/8.0.0.2602?q=UPD996016&fileCategory=Update&fileNumber=FILE938817&updateNumber=UPD996016

Once the Public VxVM hotfix 8.0.0.2602 for VRTSvxvm has been applied, run vxinstall to ensure the VxVM services are enabled.

# vxinstall


Note: To ensure the /dev/vx/.dmp directory contents are populated correctly, the system must be restarted.

# reboot


Following the system reboot, the VxVM device exclusion should now work as designed.

# vxdctl mode
mode: enabled

# rpm -qa VRTSvxvm
VRTSvxvm-8.0.0.2602-RHEL8.x86_64

# cat /etc/vx/vxvm.exclude
exclude_all 0
paths
#
controllers
#
product
#

The Veritas DMPNODE "emc0_0433" can now be excluded as follows:
 

# vxdmpadm exclude dmpnodename=emc0_0433

The /etc/vx/vxvm.exclude file is correctly populated with the required hardware path to persistently exclude the specified DMPNODE name.


Correct format:


# cat /etc/vx/vxvm.exclude
exclude_all 0
paths
sdcr pci-0000:37:00.1-fc-0x50000975b00af408-lun-18 emc0_0433
sdbs pci-0000:37:00.1-fc-0x50000975b00af448-lun-18 emc0_0433
sdv pci-0000:37:00.0-fc-0x50000975b00af448-lun-18 emc0_0433
sdau pci-0000:37:00.0-fc-0x50000975b00af408-lun-18 emc0_0433
#
controllers
#
product
#

VxVM and Veritas DMP (Dynamic Multipathing) will parse the device files in /dev/disk/by-path and build the respective files under /dev/vx/.dmp.

In this instance, Veritas DMPNODE "emc0_0433" has 4 x OS device paths. The device files must exist in /dev/disk/by-path.
 

# cd /dev/disk/by-path

Sample data

# pwd
/dev/disk/by-path

# ll | grep -w sdcr
lrwxrwxrwx. 1 root root 10 Oct  2 18:32 fc-0x51402ec01482cbee-0x50000975b00af408-lun-18 -> ../../sdcr
lrwxrwxrwx. 1 root root 10 Oct  2 18:32 pci-0000:37:00.1-fc-0x50000975b00af408-lun-18 -> ../../sdcr

# ll | grep -w sdbs
lrwxrwxrwx. 1 root root 10 Oct  2 18:32 fc-0x51402ec01482cbee-0x50000975b00af448-lun-18 -> ../../sdbs
lrwxrwxrwx. 1 root root 10 Oct  2 18:32 pci-0000:37:00.1-fc-0x50000975b00af448-lun-18 -> ../../sdbs

# ll | grep -w sdv
lrwxrwxrwx. 1 root root  9 Oct  2 18:32 fc-0x51402ec01482cbec-0x50000975b00af448-lun-18 -> ../../sdv
lrwxrwxrwx. 1 root root  9 Oct  2 18:32 pci-0000:37:00.0-fc-0x50000975b00af448-lun-18 -> ../../sdv

# ll | grep -w sdau
lrwxrwxrwx. 1 root root 10 Oct  2 18:32 fc-0x51402ec01482cbec-0x50000975b00af408-lun-18 -> ../../sdau
lrwxrwxrwx. 1 root root 10 Oct  2 18:32 pci-0000:37:00.0-fc-0x50000975b00af408-lun-18 -> ../../sdau

Sample data

In this instance, Veritas DMPNODE "emc0_0433" has 4 x OS device paths. The device files must exist in /dev/vx/.dmp.

# pwd
/dev/vx/.dmp

# ll | grep -w sdv
lrwxrwxrwx. 1 root root  63 Oct  2 18:32 sdv -> /dev/disk/by-path/pci-0000:37:00.0-fc-0x50000975b00af448-lun-18

# ll | grep -w sdbs
lrwxrwxrwx. 1 root root  63 Oct  2 18:32 sdbs -> /dev/disk/by-path/pci-0000:37:00.1-fc-0x50000975b00af448-lun-18

# ll | grep -w sdau
lrwxrwxrwx. 1 root root  63 Oct  2 18:32 sdau -> /dev/disk/by-path/pci-0000:37:00.0-fc-0x50000975b00af408-lun-18

# ll | grep -w sdcr
lrwxrwxrwx. 1 root root  63 Oct  2 18:32 sdcr -> /dev/disk/by-path/pci-0000:37:00.1-fc-0x50000975b00af408-lun-18
 

The "vxdmpadm exclude dmpnodename=<da-name>" command operation is failing to populate the required hardware path correctly in the /etc/vx/vxvm.exclude file .

Environment:

RHEL 8.8
Veritas Volume Manager (VxVM) VRTSvxvm 8.0.0.2600.